#include <iostream>
#include <iomanip>
using namespace std;

struct Date
{
    int day,mounth,year;
};
ostream& operator << (ostream& os, const Date& date)
{
    os << setfill('0');
    return os << setw(4) << date.year << "/"
              << setw(2) << date.mounth << "/"
              << setw(2) << date.day << endl;

}
istream& operator >> (istream& is, Date& date)
{
    return is >> date.year >> date.mounth >> date.day;
}
Date& init(Date& date,int year, int mounth, int day)
{
    date.year = year;
    date.mounth = mounth;
    date.day = day;
    return date;
}


    
int main()
{
    Date d;
    cin >> d;
    cout << d;
}
